50 States

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1.
http://state.1keydata.com/

2.
http://www.ipl.org/div/stateknow/chart.html

3.
http://www.50states.com/facts/#.VL7OtWTF8vE

4.
http://www.factmonster.com/states.html

5.
http://www.infoplease.com/states.html

6.
http://www.thingstodo.com/

7.
http://www.enchantedlearning.com/usa/states/

8.
http://www.worldlicenseplates.com/

9.
http://www.ducksters.com/geography/usgeography.php